Answer:
a force that is able to act at a distance
Explanation:
:)
Answer:
1.82 rad/s².
Explanation:
Applying,
α = (ω₂-ω₁)/t..................... Equation 1
Where α = angular acceleration of the fan blades, ω₂ = final angular velocity of the fan blades, ω₁ = initial angular velocity of the fan blades, t = time.
Given: ω₂ = 350 rpm = (350×0.1047) rad/s = 36.645 rad/s. ω₁ = 250 rpm = (250×0.1047) rad/s = 26.175 rad/s, t = 5.75 s.
Substitute into equation 1
α = (36.645-26.175)/5.75
α = 10.47/5.75
α = 1.82 rad/s².
Hence the magnitude of the angular acceleration of the fan blades = 1.82 rad/s²
8.34 m/s
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Answer:
The tension increases to four times its original value.
Explanation:
v = Velocity
r = Radius
m = Mass of stone
The centripetal force is
The tension will balance the centripetal force
The new tension will be 4 times the old tension
The resultant of the two vectors is determined as 9.1 units at 83.7⁰.
<h3>
Resultant of the vectors</h3>
The resultant of the vectors is calculated as follow;
Sum of vectors in x-direction = (3 - 2)x = x
Sum of vectors in y-direction = (5 + 4)y = 9y
Resultant vector = √(1² + 9²) = 9.1 units
Direction of the vectors = tan⁻¹(y/x) = tan⁻¹(9/1) = tan⁻¹(9) = 83.7⁰
Thus, the resultant of the two vectors is determined as 9.1 units at 83.7⁰.
Learn more about vectors here: brainly.com/question/25811261
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